Current Sensing Amplifiers

Current sensing amplifiers measure current by outputting a voltage that is proportional to the flowing power current. A resistor is used to convert the load current to a small voltage which is then accurately amplified. They offer real-time overcurrent protection.


What are the different applications of current sensing amplifiers?


Accurate current sensing is crucial to optimising performance in a range of applications, such as motor control and power management. In devices where battery or power-line monitoring is highly necessary, like laptops and phones, current sensing amplifiers are critical. 


How to choose the right type of current sensing amplifier


There are several factors that will determine the the type of amplifier you choose, including whether the measurement will be on the high or low side. The sense resistor can be placed either between the supply voltage and load, or between the load and ground. The former is called high-side seinsing, whereas the latter is called low-side sensing. High voltage current sensing amplifiers offer input ranges up to +76V and down to -20V, ideal for applications such as motor control and network routers. Low power current sensing amplifiers help to maximise and extend battery life. 


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Beskrivning Pris Power Supply Type Typical Single Supply Voltage Typical Dual Supply Voltage Minimum CMRR Number of Channels per Chip Output Type Maximum Supply Current Mounting Type Package Type Pin Count Dimensions Height Length Maximum Operating Supply Voltage
Nytt
RS-artikelnummer 190-6688
Tillv. art.nrMAX9934TAUA+
VarumärkeMaxim Integrated
19,518 kr
Each (In a Pack of 5)
Enheter
Single 2.5 → 3.6 V - 98dB 1 Current 230 μA Surface Mount μMAX 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 3.6 V
RS-artikelnummer 917-3520
Tillv. art.nrLT1787HVCS8#PBF
VarumärkeAnalog Devices
40,474 kr
Each (In a Tube of 100)
Enheter
Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - - 1 - 0.12 mA Surface Mount SOIC 8 5 x 3.99 x 1.48mm 1.48mm 5mm 60 V
Nytt
RS-artikelnummer 190-6383
Tillv. art.nrMAX44284FAUT+T
VarumärkeMaxim Integrated
25,62 kr
Each (In a Pack of 5)
Enheter
Single 1.7 → 5.5 V - 91.3dB 1 Voltage 41.5 μA Surface Mount SOT-23 6 3 x 1.75 x 1.3mm 1.3mm 3mm 5.5 V
Nytt
RS-artikelnummer 190-4309
Tillv. art.nrMAX4081TAUA+
VarumärkeMaxim Integrated
19,606 kr
Each (In a Tube of 50)
Enheter
Single 4.5 76 V - 100dB 1 Voltage 190 μA Surface Mount μMAX 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 76 V
RS-artikelnummer 145-6633
Tillv. art.nrAD8213WYRMZ
VarumärkeAnalog Devices
30,552 kr
Each (In a Tube of 50)
Enheter
Single 5 V - 100dB 2 Buffered 4.5 mA Surface Mount MSOP 10 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 5.5 V
Nytt
RS-artikelnummer 190-6296
Tillv. art.nrMAX4173HESA+
VarumärkeMaxim Integrated
15,095 kr
Each (In a Pack of 10)
Enheter
Single 3 → 28 V - 90 (Typ.)dB 1 Voltage 1 mA Surface Mount SO 8 5 x 4 x 1.5mm 1.5mm 5mm 28 V
Nytt
RS-artikelnummer 190-4316
Tillv. art.nrMAX4173TEUT+T
VarumärkeMaxim Integrated
17,276 kr
Each (On a Reel of 2500)
Enheter
Single 3 28 V - 90 (Typ.)dB 1 Voltage 1 mA Surface Mount SOT-23 6 3 x 1.75 x 1.3mm 1.3mm 3mm 28 V
Nytt
RS-artikelnummer 190-4328
Tillv. art.nrMAX4373TEUA+
VarumärkeMaxim Integrated
23,857 kr
Each (In a Tube of 50)
Enheter
Single 2.7 28 V - 85 (Typ.)dB 1 Voltage 100 μA Surface Mount μMAX 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 28 V
RS-artikelnummer 162-5367
Tillv. art.nrINA202AIDGKT
VarumärkeTexas Instruments
14,188 kr
Each (On a Reel of 250)
Enheter
- - - - - - - Surface Mount MSOP 8 3 x 3 x 0.97mm 0.97mm 3mm -
RS-artikelnummer 923-6968
Tillv. art.nrMAX4372TEUK+T
VarumärkeMaxim Integrated
10,589 kr
Each (On a Reel of 2500)
Enheter
Single 2.7 → 28 V - - 1 Differential 0.06 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 28 V
RS-artikelnummer 145-7690
Tillv. art.nrLT1787IMS8#PBF
VarumärkeAnalog Devices
47,219 kr
Each (In a Tube of 50)
Enheter
Single 36 V - - 1 Bidirectional, Unidirectional 0.02 mA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 36 V
RS-artikelnummer 165-9409
Tillv. art.nrMAX9611AUB+
VarumärkeMaxim Integrated
18,726 kr
Each (In a Tube of 50)
Enheter
Single 2.7 → 5.5 V - 106dB 1 Rail to Rail 2.6 mA Surface Mount μMAX 10 3.05 x 3.05 x 0.95mm 0.95mm 3.05mm 6 V
RS-artikelnummer 145-7236
Tillv. art.nrAD8417WBRMZ
VarumärkeAnalog Devices
20,064 kr
Each (In a Tube of 50)
Enheter
Single 5 V - 90dB 1 Buffered 4.1 mA Surface Mount MSOP 8 3.2 x 3.2 x 0.95mm 0.95mm 3.2mm 5.5 V
RS-artikelnummer 851-6819
Tillv. art.nrLT6105CMS8#PBF
VarumärkeAnalog Devices
21,694 kr
Each (In a Pack of 5)
Enheter
Single 2.85 36 V - 120dB 1 Unidirectional 350 μA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 36 V
Nytt
RS-artikelnummer 190-4388
Tillv. art.nrMAX9934TAUA+
VarumärkeMaxim Integrated
16,727 kr
Each (In a Tube of 50)
Enheter
Single 2.5 3.6 V - 98dB 1 Current 230 μA Surface Mount μMAX 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 3.6 V
Nytt
RS-artikelnummer 189-7364
Tillv. art.nrMAX9918ASA+
VarumärkeMaxim Integrated
14,754 kr
Each (In a Tube of 100)
Enheter
Single 4.5 5.5 V - 96dB 1 Rail to Rail 2.2 mA Surface Mount SOIC 8 4.98 x 3.99 x 1.58mm 1.58mm 4.98mm 5.5 V
RS-artikelnummer 186-1269
Tillv. art.nrNCS211RMUTAG
VarumärkeON Semiconductor
2,612 kr
Each (On a Reel of 3000)
Enheter
Single 2.2 → 26 V - 105dB 1 Rail to Rail 60 μA Surface Mount UQFN 10 1.4 x 1.8 x 0.55mm 0.55mm 1.4mm 26 V
Nytt
RS-artikelnummer 189-7365
Tillv. art.nrMAX9919NASA+
VarumärkeMaxim Integrated
14,833 kr
Each (In a Tube of 100)
Enheter
Single 4.5 5.5 V - 80dB 1 Rail to Rail 2.2 mA Surface Mount SOIC 8 4.98 x 3.99 x 1.58mm 1.58mm 4.98mm 5.5 V
RS-artikelnummer 185-8087
Tillv. art.nrNCS214RSQT2G
VarumärkeON Semiconductor
2,612 kr
Each (On a Reel of 3000)
Enheter
Single 2.2 → 26 V - 105dB 1 Rail to Rail 60 μA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V
RS-artikelnummer 185-8099
Tillv. art.nrNCV214RSQT2G
VarumärkeON Semiconductor
2,958 kr
Each (On a Reel of 3000)
Enheter
Single 2.2 → 26 V - 105dB 1 Rail to Rail 60 μA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V
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